In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].

At some clubs, the association with a former manager or player is so strong, so deep, that they can never really move on. It is an itch, nagging away in the background because results are not coming up to scratch for the supporters who long for days when they were attached to someone special. Jose Mourinho is perhaps the most notorious example, promising Chelsea supporters that he would one day return to Stamford Bridge after he was sacked by Roman Abramovich in September 2007. West Ham manager Sam Allardyce could be on his way out of Upton Park when the season finishesWest Ham manager Sam Allardyce is out of contract in the summerThere has been little to suggest he will be staying at Upton ParkSlaven Bilic's name is once again being touted as a possible replacementThe Besiktas manager had a spell at West Ham as a player in the 90s 
 Question:_ always said he would come roaring back to Chelsea after leaving in 2007.
Jose Mourinho